package study.java.jcf.map;

import lombok.extern.slf4j.Slf4j;
import org.junit.Test;

import java.util.HashMap;
import java.util.Map;

@Slf4j
public class HashMap_01_Test {

    @Test
    public void test() {
        Map<String, String> map = new HashMap<>();
        map.put("2021-11", "a");
        map.put("2021-07", "a");
        map.put("2021-04", "a");
        map.put("2021-01", "a");

        log.info(">>>>>> {}", map);
    }
}
